Kremlin critic Alexei Navalny is dead. It is still unclear how he died in the Siberian “Polar Wolf” prison camp.

Media reports from Russia said that Navalny collapsed while taking a walk. Medical staff were subsequently unable to revive him. Ukrainian intelligence chief Kyrylo Budanov has now commented on the Kremlin critic's cause of death. You can see Budanovo's assessment in the video. (do) You can also watch the video here: http://www.dailymail.co.uk/2013/02/29/kremlin-critic-Alexei-Navalny-dead.html#storylink=cpy.